I just looked this up, and you're right. At my local market (am located in the Midwest), muskmelon and cantaloupe are categorized as two different things. I think of this as muskmelon:



and this as cantaloupe:



Guess they're the same species, but different varieties. Anyway, as a punishment for my ignorance, I hereby sentence myself to go find at least one of each and eat them in one setting.

DB